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| Laboratory 12 : Tract Systems I |
| Somatosensory System : Spinoreticulotectothalamic Tract |
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Spinoreticulotectothalamic Tract
It is important to note that:
- This tract plays a significant role in arousal and attention.
- This path is bilateral (info coming in from one side of body will go up both sides of spinal cord).
- Decussation occurs at level of entry in spinal cord.
- This is a non-specific pathway, so its NOT somatotopic or submodality specific.
- There are lots of synapses via reticular formation throughout ascension.
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Slide 90 : Telencephalon
- Synapses in all parts of the cerebral cortex(neocortex, paleocortex, archicortex).
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Slide 67 : Diencephalon |
Slide 45 : Pons/Midbrain
- Synapse in reticular formation.
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Slide 26 : Medulla
- Synapse in reticular formation.
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Slide 18 : Caudal Medulla
- Synapse in reticular formation.
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Slide 8 : C6
- Afferent fibers enter the dorsal horn.
- Synapse on tract cells in dorsal horn.
- Tract cell axons decussate, some stay ipsilateral (i.e. this path is bilateral).
- Axons ascend ventrolateral funiculus in spinal cord.
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Slide 2 : L6
- Afferent fibers enter the dorsal horn.
- Synapse on tract cells in dorsal horn.
- Tract cell axons decussate, some stay ipsilateral (i.e. this path is bilateral).
- Axons ascend ventrolateral funiculus in spinal cord.
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Copyright © 2006 - University of Pennsylvania School of Veterinary Medicine, All rights reserved.
Faculty: Dr. Richard Miselis, Dr. Peter Hand
Students: Natalie Fickel V'12, Ryan Donahue V'09, Cara Catanese V’08, Rebecca Wolf V'06, Keith Javic V'03, Ken Bixel V'99, Russel Howe-Smith V'97
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